dubbo.apache.org/dubbo-go/v3@v3.1.1/common/extension/metadata_remote.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  package extension
    19  
    20  import (
    21  	"fmt"
    22  )
    23  
    24  import (
    25  	perrors "github.com/pkg/errors"
    26  )
    27  
    28  import (
    29  	"dubbo.apache.org/dubbo-go/v3/metadata/service"
    30  )
    31  
    32  type remoteMetadataServiceCreator func() (service.RemoteMetadataService, error)
    33  
    34  var (
    35  	creator remoteMetadataServiceCreator
    36  )
    37  
    38  // SetRemoteMetadataService will store the remote metadata service
    39  func SetRemoteMetadataService(creatorFunc remoteMetadataServiceCreator) {
    40  	creator = creatorFunc
    41  }
    42  
    43  // GetRemoteMetadataService will create a MetadataService instance
    44  func GetRemoteMetadataService() (service.RemoteMetadataService, error) {
    45  	if creator != nil {
    46  		return creator()
    47  	}
    48  	return nil, perrors.New(fmt.Sprintf("could not find the metadata service creator for metadataType: remote, " +
    49  		"please check whether you have imported relative packages, " +
    50  		"remote - dubbo.apache.org/dubbo-go/v3/metadata/remote/impl"))
    51  }